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mb/purism/librem_skl: Disable CLKREQ for NVMe 

This effectively reverts commit 5086ccef
(mb/purism/librem_skl: Fix CLKREQ for 15v3 NVMe).

Some Librem 15v3/v4 boards are showing issues with NVMe detection or
booting via SeaBIOS, so revert this until a proper fix can be found.

Test: build / successfully boot Librem 15v4 with problematic NVMe drive.

Change-Id: I0659f77bbe693f3d3b192a28ff3ef013658930cc
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43490
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Matt DeVillier 2020-07-15 16:09:57 -05:00 committed by Patrick Georgi
parent 7fc2281715
commit 8437ac5623
1 changed files with 2 additions and 2 deletions
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4
src/mainboard/purism/librem_skl/variants/librem15/overridetree.cb
View File

@ -1,7 +1,7 @@
chip soc/intel/skylake
# Enable CLKREQ# for RP9
register "PcieRpClkReqSupport[8]" = "1"
# Disable CLKREQ# for RP9
register "PcieRpClkReqSupport[8]" = "0"
# SRCCLKREQ2# for NVMe per schematic
register "PcieRpClkReqNumber[8]" = "2"